<!DOCTYPE HTML>
<html>
 <head>
  <title> New Document </title>
  <meta charset="UTF-8" />
  <meta name="Generator" content="NPP-Plugin">
  <meta name="Author" content="">
  <meta name="Keywords" content="">
  <meta name="Description" content="">
  <style>
	/* 这里是CSS代码 */
  </style>
  <!---框架代码必须放置在头部-->
  <frameset cols="25%,50%,25%">

  <frame src="./example/html/frame_a.html">
  <frame src="./example/html/frame_b.html">
  <frame src="./example/html/frame_c.html">

  </frameset>
 </head>
 
 <body>

 </body>
</html>